Fabrication: Sinamay with Polyester and feathers Fix way: Headband Size: One size for teens, girls and ladies (Head measurement: 55 cm, 21-5/8", Size 6-7/8 to 59 cm, 23-1/4", Size 7-3/8) Diameters of hat base: 34 cm Colors to choose: Navy Great for Royal Ascot, Cocktail Party,etc.